I have a small bar and the walls are 2 say the least, bad anyway. How important is it to clean the walls first and why? Thanks for any advice.
Nicotine MUST be Sealed with a Pigmented Shellac Sealer Primer… washing first may help, but it's best to apply 2 heavy coats of the primer, allowing 1/2 hr drying in between… before top coating with any paint… otherwise the Nicotine will BLEED thru the paint and turn it "brownish"… NO amount of regular paint coats will work, to seal the Nicotine!!!